Laminated structure and method of producing it



Jly 20 1926. 1,593,200

F. v. rlscHx-:R

LAMINATED STRUCTURE AND METHOD 0F PRODUCING IT Filed Feb. 17. 1923 ZSheetS-Sheet 2 *O @www l me; JMWl/,l f,

Patented July 20, 1926.

UNITED STATES FRANK V. TISCHER, OF DAYTON, OHIO.

LAMINATED STRUCTURE AND METHOD OF PRODUCING IT.

Application filed February 17, 1923.

My invention relates to laminated structures and a method of producing them.

The object of my invention is to provide laminated structures of great strength, durability, and beauty, built of very short lengths of laminations which may be assembled individually or in groups to form structures of predetermined character and size.

It is a further object to provide such a laminated structure so that no end joint will be over another joint.

It is my object to provide all joints being overlapped by a solid structure. j

It is a further object to provide the dis lposition of units composing the laminated structure at an angle to the axis of major stress securing a structure of great strength and rigidity.

It is a further object to provide means of forming annular structures or laminated ,structures which are curved in various con- Figuiatioiis.

Particularly, it is my object to provide from short cheap pieces of laminated material annular structures such as steering Wheels for automotive vehicles in which great strength is required as well as a smooth surface and an attractive appearance.

Referring to the drawings:

Figure 1 illustrates a steering wheel built up of a series of laminations arranged in planes parallel to the vertical axis of the wheel.

Fig. 2 illustrates a steering wheel built up of a plurality of laininations arranged in the same plane as the wheel and at right angles to the vertical axis of the wheel.

Fig. 3 is an enlarged view of one of the units assembly of the laminations preferably employed in building up the steering wheel shown in Fig. 2.

Fig. 4 is a side elevation of a complete, 4assembled group of laniinations forming the steering wheel shown in Fig. 2 before the wood has been turned down to form the completed steering wheel shown in Fig. 5.

Fig. 5 is a side elevation of the completed steering wheel.

Fig. 6 is a section enlarged showing the arrangement of the laminations within. a retaining ring which laminations are to form a steering wheel shown in Fig. 1.

Fig. 7 is a plan view of the laminatioiis arranged in completed form to form the steering wheel prior to being turned to form acompleted wheel.

Serial No. 6.1.9,719.

table. 5 and a block 6 for supporting one end of the laminated structure until it is builtu If the structure is an annular one as in Fig. 2 then the other end will be built up to take the place of the block 6. I find it advantageous to build up these laminated structures in groups such as in Fig. 3, then to assemble them as in Fig. 4. The dark dividing lines 7 in Fig. 4 indicate the divisions lines between units. This arrangement is not essential but it is a matter of advantage in assembling such structures. It will be understood that it is preferable to have each of the laminations cut out to form a portion o'f the annular member so that there are a series of segments being assembled one upon the other in laminated forni. It is preferable to glue the laminations to one another and to exert pressure upon them so that they will firmly engage. I then place the completed structure in a lathe and turn it to the desired form with the result that the joints between the laminations give the steering wheel the appearance of a grain like the strands of a rope resulting in a linish of great beauty strength and durability. It will be observed that the laininations are disposed at an angle to the horizontal plane and therefore lend great strength to the structure.

In the other form of my invention I prol vide an annular member or ring such as 8 having a series of stepped portions inwardly extending as at 9 with the ends 10 against which laminations 11, 12, 13 14, and the like abut in succession. It will be observed that these projections 9 are at their ends of a depth of a single lamination and provide for the positioning of the laminations relative to one another in stepped relation with overlapping joints. In this instance the laminations are parallel to the main axis of the Wheel to be formed. They Utl are glued. to one another in succession and when linally removed from the ring` they are placed in the lathe and turned up.

The interior oiE this ring7 therefore, is laid oft in a series ot 'volutes forming the shoulders 9 ot' the lnaxinuun depth ol a single lamination and tapering; to infinity to the hase of the next succeeding shoulder et the next volute. The successive lamina-tions are accordingly laid ott' on successive volutee.

.lt will he understood that l do not dcsire to eonliue niysell. to the details olC my invention, hut comprehend within it suitable and necessary modifieations.

Having thus lully described my invention, what I claim :is new and desire to secure hy Letters Patent, iszl. In a method. et forming a lzuninated structure for use as a steering wheel, selecting a plurality of laininations, anfranging said lanlinations in stepped relationship with respect to one another', said laminations beingv tilted at an angle to n horizontal plane which is the plane o ythe Wheel and arranged with their faces partially overlapping one another.

2. In a method ot' forming a laminated structure lor use as a steeringl wheel, selecting a plurality et relatively short curved lalninations, arranging said laminations in stepped overlappingr relationship with re speet to one another, said lalninations heA ing tilted to a horizontal plane which is the plane of the wheel, `fastening said laminations so that they eannot motie with respect to one another, and arranging said laininations so that they forin a Circular body.

3. ln a lan'iinated structure 'for use as a steeringr wheel, a plurality oi relatively short laininations arranged in stepped relutionship to one another, each ol said laminations being partially exposed and zu'- ranged so that the laininations are tilted at an angle to a horizon-tal plane which is the plane of the Wheel. y

In testimony whereof, I aliix my signature.

FRANK V. TISCIHQR. 

